501193949955 has 64 divisors (see below), whose sum is σ = 847126425600. Its totient is φ = 252333290880.

The previous prime is 501193949953. The next prime is 501193949957. The reversal of 501193949955 is 559949391105.

It is an interprime number because it is at equal distance from previous prime (501193949953) and next prime (501193949957).

It is not a de Polignac number, because 501193949955 - 2¹ = 501193949953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501193949953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130279842 + ... + 130283688.

It is an arithmetic number, because the mean of its divisors is an integer number (13236350400).

Almost surely, 2^501193949955 is an apocalyptic number.

501193949955 is a deficient number, since it is larger than the sum of its proper divisors (345932475645).

501193949955 is a wasteful number, since it uses less digits than its factorization.

501193949955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384.

The product of its (nonzero) digits is 9841500, while the sum is 60.

The spelling of 501193949955 in words is "five hundred one billion, one hundred ninety-three million, nine hundred forty-nine thousand, nine hundred fifty-five".